Disc retaining device



FIG. 1 is a perspective view of a disc retaining device showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side elevational view thereof; and,

FIG. 4 is a front elevational view thereof.

The broken lines showing a central hub, and a peripheral rectangular edge, throughout the views define the boundaries of the design. The remaining broken lines represent the environment in which the design resides. None of the broken lines form any part of the claim. 

The ornamental design for a disc retaining device, as shown and described. 